Measurement E213M1127

Experiment:	E1-6, 2025
Year:	2001	Measurement comment: The angle ψ is the angle between the plane defined by the three-momenta of the hadron (in parentheses) and the target proton, and the plane defined by the three-momenta of the other two final-state hadrons Experiment comment: Experiment year: 2001—2002
Spokespersons:	R.W. Gothe, A. Trivedi
Reaction:	ep → π⁺π⁻p
Polarization:	none
Quantity:	dσ/dψ(π⁺)
Q²:	3.5 — 4.2 GeV²
W:	1.925 — 1.95 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2713	0.0204	0.0503	0.0543
54.0	0.2625	0.0339	0.0503	0.0607
90.0	0.2992	0.0269	0.057	0.063
126.0	0.4453	0.0614	0.0708	0.0937
162.0	0.4461	0.03	0.0699	0.0761
198.0	0.4639	0.0306	0.0716	0.0779
234.0	0.4025	0.0322	0.0663	0.0738
270.0	0.3118	0.0279	0.0579	0.0643
306.0	0.2503	0.0204	0.0489	0.053
342.0	0.2553	0.022	0.0484	0.0532

CLAS Physics Database